I believe the early Sumerian, Egyptian and Indian civilizations were extremely technologically advanced. Noah and his family must have taken a lot of technology with them on the ark and introduced this into the new world. The bible is more interested in the spirituality of man and not the technology and so does not describe unnecessary details. I believe a comet impact wiped out these civilizations about 2000 BC with the fall of the Old Kingdom and Akkadia and Indus valley civilizations occurring around then. This also caused the sudden ice age (mammoths frozen for 4000 years)
Read this website:
Charles Berlitz, author of several books, including The Bermuda Triangle, was the grandson of the founder of the world-famous Berlitz schools, wrote:
"If atomic warfare were actually used in the distant past and not just imagined, there must still exist some indications of a civilization advanced enough to develop or even to know about atomic power. One does find in some of the ancient writings of India some descriptions of advanced scientific thinking which seemed anachronistic to the age from which they come.
The Jyotish (400 B. C) echoes the modern concept of the earth's place in the universe, the law of gravity, the kinetic nature of energy, and the theory of cosmic rays and also deals, in specialized but unmistakable vocabulary, with the theory of atomic rays. And what was thousands of years before the medieval theologians of Europe argued about the number of angels that could fit on the head of a pin.
Indian philosophers of the Vaisesika school were discussing atomic theory, speculating about heat being the cause of molecular change, and calculating the period of time taken by an atom to traverse its own space.
Readers of the Buddhist pali sutra and commentaries, who studied them before modern times, were frequently mystified by reference to the "tying together" of minute component parts of matter; although nowadays it is easy for a model reader to recognize an understandable description of molecular composition."
Nearly every Hindu and Buddhist in the world - hundreds of millions of people has heard of the ancient flying machines referred to in the Ramayana and other texts as vimanas.
Vimanas are mentioned even today in standard Indian literature and media reports. An article called “Flight Path” by the Indian journalist Mukul Sharma appeared in the major newspaper The Times of India on April 8, 1999 which talked about vimanas and ancient warfare: according to some interpretations of surviving texts, India’s future it seems happened way back in the past. Take the case of the Yantra Sarvasva, said to have been written by the sage Maharshi Bhardwaj.
This consists of as many as 40 sections of which one, the Vaimanika Prakarana dealing with aeronautics, has 8 chapters, a hundred topics and 500 sutras.
In it Bhardwaj describes vimana, or aerial aircrafts, as being of three classes:
1. those that travel from place to place;
2. those that travel from one country to another;
3. those that travel between planets.
Of special concern among these were the military planes whose functions were delineated in some very considerable detail and which read today like something clean out of science fiction.
For instance, they had to be:
Impregnable, unbreakable, non-combustible and indestructible capable of coming to a dead stop in the twinkling of an eye; invisible to enemies; capable of listening to the conversations and sounds in hostile planes; technically proficient to see and record things, persons, incidents and situations going on inside enemy planes; know at every stage the direction of the movement of other aircraft in the vicinity; capable of rendering the enemy crew into a state of suspended animation, intellectual torpor or complete loss of consciousness; capable of destruction; manned by pilots and co-travelers who could adapt in accordance with the climate in which they moved; temperature regulated inside; constructed of very light and heat absorbing metals; provided with mechanisms that could enlarge or reduce images and enhance or diminish sounds.
Notwithstanding the fact that such contraption would resemble a cross between an American state-of-the-art Stealth Fighter and a flying saucer, does it mean that air and space travel was well known to ancient Indians and airplanes flourished in India when the rest of the world was just learning the rudiments of agriculture? Aerial battles and chases are common in ancient Hindu literature. What did these airships look like? The ancient Mahabharata speaks of a vimana as “an aerial chariot with the sides of iron and clad with wings.”
The Ramayana describes a vimana as a double-deck, circular (cylindrical) aircraft with portholes and a dome. It flew with the “ speed of the wind”, and gave forth a “melodious sound” The ancient Indians themselves wrote entire flight manuals on the care and control of various types of vimanas. The Samara Sutradhara is a scientific treatises dealing with every possible facet of air travel in a vimana. There are 230 stanzas dealing with construction, take-off, cruising for thousands of miles, normal and forced landings, and even possible collusions with birds! Would these texts exist (they do) without there being something to actually write about? Traditional historians and archaeologists simply ignore such writings as the imaginative ramblings of a bunch of stoned, ancient writers.